Can I tell Apple's Time Machine to backup a single folder?Yeah, I know that, but thanks anyway. ( I have a 1 TB disk for backup, I'm not expecting that anytime soon, my initial backup was 170 GB, from which I have to remove many useless files like movies, and progrssive backups are no more than a couple of MBs now )

XAMPPErrorDomain error 1 for changing MySQL data dirsThanks, in the end I realized looking at the logs, that mysqld was not using the datadir from my.cnf but instead was following a symbolic link in '/Applications/XAMPP/xamppfiles/var/mysql' pointing to the old data dir. Changed that and it worked, of course. Thanks!